21
OPERATION AND FUNCTIONS
NO
CONTROL
FUNCTION
CONTROL
OBJECTS
CONTENTS REMARK
9 Option Cir-
cuit 1(Weak
Refrigeration)
1. Option for Weak Refrigeration, Service Reference
1) When Weak Refrigeration occur, it’s easy to find solution by this.
2) Regulation of R-Sensor Off point ( -1.5 deg Down)
2. In case of Weak Refrigeration, take action as followings.
1) Resistance(R31) :Standard Resistance of R-Sensor middle-off point
in case of Normal Run
(31.4k
Ω = -10°C) (25.2kΩ = 4.0°C)
When change resistance 31.4kΩ into 25.2kΩ R-sensor middle-off point
will be 5.0 deg
2) Resistance (R32): Standard resistance to make R-Sensor Off Point in
case of Weak Refrigeration.
- R32 2.15k
Ω : R-Sensor Off Point will be down by 1.5deg
- R32 6.19k
Ω : R-Sensor Off Point will be down by 4.0deg
3) SW 1: If SW1 is off in Service, R Sensor Off Point will be down by
1.5deg.
R31 + SW 1 ON: Middle Off Point: 0.5
¡É ( In Normal Run )
R31 + SW 1 OFF: Middle Off Point:-1.0
¡É ( In Weak Refrigeration )
10 Option Cir-
cuit 2 (Pre-
vention
Strong Refrig-
eration)
1. Prevention of Strong Refrigeration Option (change Middle - off point)
11 Continuous
Run
Comp F-FAN
Heater
1) How to start: If push the Temp. control s/w 30 times,it will start.
2) How to add one more run: Push Temp. control s/w 30 times in Continu-
ous-run mode.
3) How to end: It will end automatically after 21 hours( Limit time: 21hour)
If it is added one more run and you you'd like to finish it , push
Temp. control s/w 30 times.
4) Display : Let all the LEDs ON.
5) How to control: Comp/F-fan/C-fan ON,HTR OFF
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